/* 匀称留白 */
.section { padding: 64px 0; }

/* Hero：覆一层轻遮罩让文字更稳 */
.hero { position: relative; }
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.25);
}
.hero > .container { position: relative; z-index: 1; }

/* 最新版本卡片 */
.version-card .feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 24px;
}
@media (max-width: 576px) {
  .version-card .feature-grid { grid-template-columns: 1fr; }
}
.feature { display: flex; gap: 10px; align-items: flex-start; }
.feature-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: #0d6efd; margin-top: 8px; flex: 0 0 10px;
}

/* 时间轴 */
.timeline {
  position: relative;
  margin-left: 12px; padding-left: 24px;
}
.timeline::before {
  content: ""; position: absolute; left: 12px; top: 0; bottom: 0;
  width: 2px;
}
.tl-item { position: relative; margin-bottom: 24px; }
.tl-dot {
  position: absolute; left: -2px; top: 12px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #0d6efd; box-shadow: 0 0 0 4px rgba(13,110,253,.15);
}
.tl-content { margin-left: 8px; border-radius: 10px; }

/* CTA 卡片 */
.cta { border-radius: 14px; }

/* 微调排版 */
.card-body ul { padding-left: 1.1rem; }
.card-body li { line-height: 1.8; }